Fair Value of Financial Instruments (Tables)

6 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurement of Company's Short-term Investments and Derivative Instruments

The fair value measurement of the Company’s short-term investments and derivative instruments was determined using the following inputs (in thousands):

	As of March 31, 2016
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable (Level 2)		Significant Unobservable (Level 3)		Totals
Short-term investments
Corporate bonds	$	10,694	$	—	$	—	$	10,694
Government bonds		4,204		—		—		4,204
Foreign currency forward contract		—		5		—		5
Total	$	14,898	$	5	$	—	$	14,903

	As of September 30, 2015
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable (Level 2)			Significant Unobservable (Level 3)		Totals
Short-term investments
Corporate bonds	$	15,161	$	—		$	—	$	15,161
Government bonds		2,951		—			—		2,951
Foreign currency forward contract		—		(18	)		—		(18	)
Total	$	18,112	$	(18	)	$	—	$	18,094